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Improvements in and relating to drum-wound armatures of dynamo-electric machines
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Improvements in and relating to dynamo-electric machines
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Control of electric motors
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Improvements in and relating to electric motors
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Improved apparatus for the control of electric circuits
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IE11703L
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Electric motors
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Improvements in or relating to gramophone pick-ups
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Improvements in and relating to the regulation of the speed of electric motors
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Improved apparatus for the control of electric motors
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Improvements in electric motors
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Improvements in electric motors
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CA308428A
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Electric motor
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CA308429A
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Electric motor
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